Honda 90-01 Integra LS/RS/GS Manual Transmission Input Shaft Seal 28x41x7mm
Part Number: 91216-PH8-005

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Product Details

The Genuine Honda OEM Manual Transmission Input Shaft Oil Seal (91216-PH8-005) is a factory replacement seal designed to prevent manual transmission fluid from leaking around the input shaft of compatible Honda and Acura transmissions. Manufactured to Honda's original equipment specifications by NOK, this precision-engineered oil seal provides dependable sealing performance, proper fitment, and long-lasting durability.

The input shaft oil seal plays an essential role in maintaining transmission reliability by keeping manual transmission fluid contained within the transmission housing while allowing the input shaft to rotate freely. Located internally near the input shaft bearing, this seal helps prevent fluid from escaping into the transmission bellhousing, where leaks can potentially contaminate the clutch and flywheel assembly.

Over time, continuous shaft rotation, heat exposure, and normal wear can cause the original seal to deteriorate, resulting in transmission fluid leaks and reduced sealing performance. Whether you're rebuilding a B-Series transmission, servicing an F-Series or H-Series drivetrain, or upgrading internal transmission components, replacing the original seal with a genuine Honda component helps restore factory sealing performance.

Featuring precise 28mm x 41mm x 7mm dimensions, this OEM input shaft seal is an excellent choice for transmission rebuilds, performance drivetrain upgrades, and preventative maintenance.

Features

Genuine Honda OEM Quality: Manufactured to Honda's original equipment specifications for consistent fitment, reliability, and sealing performance.
NOK Manufacturing: Produced by NOK, a trusted manufacturer of precision automotive oil seals and sealing components.
Precision 28x41x7mm Dimensions: Features a 28mm inner diameter, 41mm outer diameter, and 7mm thickness.
Reliable Transmission Fluid Sealing: Helps prevent manual transmission fluid from escaping around the input shaft.
Durable Sealing Construction: Engineered to withstand transmission fluid exposure, operating temperatures, and continuous shaft rotation.
Direct OEM Replacement: Replaces the factory-installed input shaft seal on compatible Honda and Acura manual transmissions.
Protects Clutch Components: Helps prevent transmission fluid from entering the bellhousing and contaminating the clutch or flywheel.
Maintains Transmission Reliability: Helps preserve proper transmission lubrication and reduces the risk of fluid loss.
Ideal for Transmission Rebuilds: Recommended when servicing input shaft bearings, synchronizers, gears, or other internal transmission components.
B-Series, F-Series, and H-Series Compatibility: Designed for select Honda manual transmissions used with these popular engine families.
Performance Build Ready: Suitable for compatible naturally aspirated, turbocharged, and supercharged drivetrain applications.
Factory Fit and Function: Maintains Honda's original sealing design without requiring modifications.

Additional Information

Manufacturer: Honda
Brand: Genuine Honda OEM
Part Number: 91216-PH8-005
Product Type: Manual Transmission Input Shaft Oil Seal
Alternative Names: Input Shaft Seal, Mainshaft Oil Seal, Manual Transmission Front Oil Seal, Transmission Mainshaft Seal
OEM Description: Oil Seal (28x41x7) (NOK)
Manufacturer / Supplier: NOK
Inner Diameter: 28mm
Outer Diameter: 41mm
Thickness: 7mm
Installation Location: Inside Manual Transmission Housing / Input Shaft Bearing Area
Replacement Type: Direct OEM Replacement
Superseded Part Number: 91216-PH8-003
Quantity: 1 Seal
Condition: New

Common Reasons for Replacement

Manual transmission input shaft seals are subjected to continuous shaft rotation, temperature changes, and transmission fluid exposure. Over time, the original sealing material can wear or deteriorate, allowing transmission fluid to escape from the transmission housing.

Transmission Fluid Leaks: Fluid leaking from the input shaft area or accumulating inside the transmission bellhousing.
Clutch Contamination: Transmission fluid reaching the clutch disc or flywheel, potentially causing slipping, chatter, or inconsistent engagement.
Worn Sealing Lip: Continuous shaft rotation can gradually wear the sealing surface and reduce the seal's effectiveness.
Hardened or Cracked Seal Material: Age and repeated heat cycles can cause the original seal to lose flexibility.
High-Mileage Transmission Maintenance: Replacing aging seals during transmission service helps reduce the risk of future leaks.
Input Shaft Bearing Replacement: An ideal opportunity to replace the seal while servicing the input shaft bearing.
Manual Transmission Rebuilding: Recommended when disassembling the transmission for internal repairs or performance upgrades.
Gear Set and Synchronizer Upgrades: Preventative replacement during installation of upgraded gears or transmission synchronizers.
Limited-Slip Differential Installation: A convenient maintenance item when the transmission is already disassembled for internal upgrades.
Transmission Fluid Loss: A damaged seal can contribute to reduced fluid levels and potentially accelerated internal transmission wear.
Important: Fluid leaks around the bellhousing may also originate from the engine rear main seal or other transmission components. Proper diagnosis is recommended before replacing the input shaft seal.

Installation Notes

Remove the Transmission: Accessing the input shaft oil seal requires removing the manual transmission from the vehicle.
Disassemble the Transmission Housing: This seal is located internally near the input shaft bearing. The transmission case must be separated to access the seal.
Locate the Existing Input Shaft Seal: Identify the factory oil seal positioned near the input shaft bearing assembly.
Remove the Original Seal Carefully: Use appropriate seal removal tools and procedures to avoid damaging the transmission case, bearing surfaces, or input shaft.
Inspect the Input Shaft: Examine the shaft's sealing surface for scratches, grooves, corrosion, or excessive wear that could prevent the replacement seal from sealing properly.
Inspect the Input Shaft Bearing: Check the bearing for excessive play, roughness, or damage. Worn bearings can contribute to premature seal failure.
Clean the Seal Housing: Remove old oil residue, dirt, and debris from the seal bore before installing the replacement seal.
Prepare the New Seal: Follow Honda's factory service procedures regarding lubrication, seal orientation, and installation preparation.
Install the Replacement Seal: Use an appropriately sized seal driver to press the new seal evenly into the transmission housing at the factory-specified depth. Ensure the seal is installed squarely without damaging the sealing lip.
Verify Seal Orientation: Confirm that the sealing lip faces the correct direction according to the Honda factory service manual.
Reassemble the Transmission: Reinstall the input shaft components, bearings, and transmission case using the appropriate factory procedures, sealants, and torque specifications.
Refill with the Correct Transmission Fluid: Fill the transmission with the Honda-approved manual transmission fluid specified for your application.
Inspect for Leaks: After reinstalling the transmission, verify proper operation and inspect the transmission housing and bellhousing area for signs of fluid leakage.
Installation Recommendation: Unlike externally accessible seals, this input shaft seal requires internal transmission disassembly. Professional installation is recommended for individuals unfamiliar with manual transmission rebuilding procedures.

What's Included

(1) Genuine Honda OEM Manual Transmission Input Shaft Oil Seal – 91216-PH8-005

Please Note:

Input shaft bearings, transmission gears, synchronizers, case sealant, clutch components, transmission fluid, additional seals, and installation tools are sold separately.

Keep your Honda or Acura manual transmission properly sealed and protected with the Genuine Honda OEM Manual Transmission Input Shaft Oil Seal (91216-PH8-005). Featuring precision 28x41x7mm dimensions, NOK manufacturing quality, and factory-engineered sealing performance, this OEM replacement seal is an excellent choice for B-Series, F-Series, and H-Series transmission rebuilds, drivetrain upgrades, and preventative maintenance.

Whether you're restoring a classic Acura Integra, rebuilding a Honda Civic Si transmission, or assembling a high-performance B-Series or H-Series drivetrain, choosing genuine Honda replacement components helps ensure dependable transmission operation and long-term reliability.

Part Number:	91216-PH8-005
Brand:	Honda

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.

Vehicle Fitment

Year	Make	Model	Trim
1990	Acura	Integra	GS
1990	Acura	Integra	LS
1990	Acura	Integra	RS
1990	Honda	Accord	DX
1990	Honda	Accord	EX
1990	Honda	Accord	LX
1991	Acura	Integra	GS
1991	Acura	Integra	LS
1991	Acura	Integra	RS
1991	Honda	Accord	DX
1991	Honda	Accord	EX
1991	Honda	Accord	LX
1991	Honda	Accord	SE
1992	Acura	Integra	GS
1992	Acura	Integra	GS-R
1992	Acura	Integra	LS
1992	Acura	Integra	RS
1992	Honda	Accord	DX
1992	Honda	Accord	EX
1992	Honda	Accord	LX
1992	Honda	Prelude	S
1992	Honda	Prelude	Si
1992	Honda	Prelude	Si 4WS
1993	Acura	Integra	GS
1993	Acura	Integra	GS-R
1993	Acura	Integra	LS
1993	Acura	Integra	RS
1993	Honda	Accord	10th Anniversary
1993	Honda	Accord	DX
1993	Honda	Accord	EX
1993	Honda	Accord	LX
1993	Honda	Accord	SE
1993	Honda	Prelude	S
1993	Honda	Prelude	Si
1993	Honda	Prelude	Si 4WS
1993	Honda	Prelude	VTEC
1994	Acura	Integra	GS-R
1994	Acura	Integra	LS
1994	Acura	Integra	RS
1994	Honda	Accord	DX
1994	Honda	Accord	EX
1994	Honda	Accord	LX
1994	Honda	Civic del Sol	VTEC
1994	Honda	Prelude	S
1994	Honda	Prelude	Si
1994	Honda	Prelude	Si 4WS
1994	Honda	Prelude	VTEC
1995	Acura	Integra	GS-R
1995	Acura	Integra	LS
1995	Acura	Integra	RS
1995	Acura	Integra	Special Edition
1995	Honda	Accord	DX
1995	Honda	Accord	EX
1995	Honda	Civic del Sol	VTEC
1995	Honda	Prelude	S
1995	Honda	Prelude	SE
1995	Honda	Prelude	Si
1995	Honda	Prelude	VTEC
1996	Acura	Integra	GS-R
1996	Acura	Integra	LS
1996	Acura	Integra	RS
1996	Acura	Integra	Special Edition
1996	Honda	Accord	25th Anniversary Edition
1996	Honda	Accord	DX
1996	Honda	Accord	EX
1996	Honda	Accord	Value Package
1996	Honda	Civic del Sol	VTEC
1996	Honda	Prelude	S
1996	Honda	Prelude	Si
1996	Honda	Prelude	VTEC
1997	Acura	CL	Base
1997	Acura	CL	Premium
1997	Acura	Integra	GS
1997	Acura	Integra	GS-R
1997	Acura	Integra	LS
1997	Acura	Integra	RS
1997	Acura	Integra	Type R
1997	Honda	Accord	DX
1997	Honda	Accord	EX
1997	Honda	Accord	SE
1997	Honda	Accord	Value Package
1997	Honda	CR-V	LX
1997	Honda	Civic del Sol	VTEC
1997	Honda	Prelude	Base
1997	Honda	Prelude	Type SH
1998	Acura	CL	Base
1998	Acura	CL	Premium
1998	Acura	Integra	GS
1998	Acura	Integra	GS-R
1998	Acura	Integra	LS
1998	Acura	Integra	RS
1998	Acura	Integra	Type R
1998	Honda	Accord	DX
1998	Honda	CR-V	EX
1998	Honda	CR-V	LX
1998	Honda	Prelude	Base
1998	Honda	Prelude	Type SH
1999	Acura	CL	Premium
1999	Acura	Integra	GS
1999	Acura	Integra	GS-R
1999	Acura	Integra	LS
1999	Honda	Accord	DX
1999	Honda	CR-V	EX
1999	Honda	CR-V	LX
1999	Honda	Civic	Si
1999	Honda	Prelude	Base
1999	Honda	Prelude	Type SH
2000	Acura	Integra	GS
2000	Acura	Integra	GS-R
2000	Acura	Integra	LS
2000	Acura	Integra	Type R
2000	Honda	Accord	DX
2000	Honda	Accord	EX
2000	Honda	Accord	LX
2000	Honda	Accord	SE
2000	Honda	CR-V	EX
2000	Honda	CR-V	LX
2000	Honda	CR-V	SE
2000	Honda	Civic	Si
2000	Honda	Prelude	Base
2000	Honda	Prelude	Type SH
2001	Acura	Integra	GS
2001	Acura	Integra	GS-R
2001	Acura	Integra	LS
2001	Acura	Integra	Type R
2001	Honda	Accord	DX
2001	Honda	Accord	EX
2001	Honda	Accord	LX
2001	Honda	Accord	Value Package
2001	Honda	CR-V	EX
2001	Honda	CR-V	LX
2001	Honda	CR-V	SE
2001	Honda	Prelude	Base
2001	Honda	Prelude	Type SH
2002	Honda	Accord	DX
2002	Honda	Accord	EX
2002	Honda	Accord	LX
2002	Honda	Accord	SE
2002	Honda	Accord	Value Package